Temperature control system for wax melting tank of expanded explosive production workshop

Abstract

The utility model relates to the technical field of expanded explosive production equipment, in particular to a temperature control system for a wax melting tank of an expanded explosive production workshop. The temperature of compound oil in the wax melting tank is monitored in real time through the first temperature sensor, the opening degree of the first electric control valve is correspondingly controlled through the PID controller, and therefore the steam inlet amount of the steam of the first steam inlet pipe is adjusted, the temperature of the compound oil in the wax melting tank is controlled to range from 80 DEG C to 90 DEG C, and decomposition caused when the temperature reaches 90 DEG C or above is avoided; due to PID control, after preliminary melting in the wax melting tank, the stirring shaft is driven by the telescopic cylinder to extend into the wax melting tank, and the stirring shaft reciprocates in the wax melting tank in the rotating and stirring process by utilizing the transmission case, so that the composite oil in the wax melting tank is more uniformly distributed, the wax melting temperature is accurately controlled, and the wax melting efficiency is improved. And the wax melting efficiency and the wax melting uniformity of the wax melting tank are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of expanded explosive production equipment, in particular to a wax melting tank temperature control system in an expanded explosive production workshop. Background Art

[0002] Integrated composite oil for explosives is one of the raw materials for expanded explosives production. Integrated composite oil mainly contains paraffin, oil and bulking agent, etc. The melting temperature of the oil phase is 80℃-100℃. The bulking agent is more likely to decompose when heated due to its unstable chemical structure. Especially when the temperature is above 90℃, it will decompose violently, which will greatly reduce or invalidate the expansion effect in subsequent production. Therefore, in the production process of expanded explosives, the temperature control of the waxing process of the composite oil needs to be very precise.

[0003] The Chinese patent with the authorization announcement number CN217173588U discloses a wax melting tank for producing emulsion explosives, in which an empty slot is opened inside the tank body; a heating pipe is arranged inside the empty slot, and the granular wax blocks are melted by the heat transfer of the heating pipe. However, the heat conductivity of this structure is not high, and the melting uniformity of the wax blocks is poor, which easily causes the granular wax blocks in the middle of the tank body to melt slower than the granular wax blocks at the edge, which also leads to inaccurate temperature control during the wax melting process. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a wax melting tank temperature control system for an expanded explosive production workshop, so as to accurately control the wax melting temperature and improve the wax melting efficiency and wax melting uniformity of the wax melting tank.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A wax tank temperature control system for an expanded explosive production workshop, comprising:

[0007] frame;

[0008] The wax melting tank body is a tank structure with an upper opening, a first steam coil is coiled in the tank body, one end of the first steam coil extends out of the wax melting tank body and is connected to a first steam inlet pipe, and the other end of the first steam coil extends out of the wax melting tank body and is connected to a first steam return pipe; the first steam return pipe is connected to a first electric control valve;

[0009] A first temperature sensor, which is disposed in the wax melting tank body and is used to monitor the oil temperature in the wax melting tank body;

[0010] A transmission box, the transmission box is liftably connected to the upper part of the wax melting tank body, a reciprocating screw with a horizontal axial direction is arranged in the transmission box, one end of the reciprocating screw is transmission-connected to a driving motor, the driving motor is used to drive the reciprocating screw to rotate, a nut slider is connected to the reciprocating screw, a horizontal guide rail is also arranged in the transmission box, the nut slider is slidably connected to the guide rail, and a horizontal rack is also arranged in the transmission box;

[0011] A stirring shaft, the upper end of which is connected to the nut slider via a bearing, a gear is coaxially connected to the stirring shaft, and the gear is meshed with the rack;

[0012] A stirring blade, wherein the stirring blade is connected to the lower part of the stirring shaft;

[0013] A telescopic cylinder, wherein the cylinder body of the telescopic cylinder is vertically connected to the frame, the piston rod of the telescopic cylinder is connected to the transmission box, and the telescopic cylinder is used to drive the transmission box to move upward and downward;

[0014] A PID controller is electrically connected to the first temperature sensor, the first electric control valve, the drive motor, and the telescopic cylinder respectively.

[0015] Furthermore, the wax tank temperature control system in the expanded explosive production workshop also includes:

[0016] A heat preservation tank, wherein a second steam coil is coiled in the heat preservation tank, one end of the second steam coil extends to the outside of the heat preservation tank and is connected to a second steam inlet pipe, the other end of the second steam coil extends to the outside of the heat preservation tank and is connected to a second steam reflux pipe, the second steam inlet pipe is connected to a second electric control valve, and the heat preservation tank is located below the wax melting tank body;

[0017] A material guide pipe, the material guide pipe is connected between the lower part of the wax melting tank body and the upper part of the heat preservation tank, and the material guide pipe is connected to a third electric control valve;

[0018] A second temperature sensor, the second temperature sensor is arranged in the heat preservation tank and is used to monitor the oil temperature in the heat preservation tank;

[0019] The PID controller is electrically connected to the second electrically controlled valve, the third electrically controlled valve and the second temperature sensor respectively.

[0020] Furthermore, in the above-mentioned wax melting tank temperature control system of the expanded explosive production workshop, a first one-way valve is connected to the first steam reflux pipe.

[0021] Furthermore, in the above-mentioned wax melting tank temperature control system of the expanded explosive production workshop, a second one-way valve is connected to the second steam reflux pipe.

[0022] Furthermore, in the above-mentioned wax melting tank temperature control system of the expanded explosive production workshop, the telescopic cylinder is a gas cylinder, a hydraulic cylinder or an electric cylinder.

[0023] Furthermore, the wax tank temperature control system in the expanded explosive production workshop also includes:

[0024] A water tank, wherein the starting end of the first steam inlet pipe is connected to the water tank, the starting end of the second steam inlet pipe is connected to the water tank, the end of the first steam return pipe is connected to the water tank, and the end of the second steam return pipe is connected to the water tank;

[0025] The heating device is connected to the water tank and is used to heat the water in the water tank to generate steam.

[0026] Furthermore, in the above-mentioned wax melting tank temperature control system of the expanded explosive production workshop, the upper part of the transmission box is connected to a vertical guide column, and the frame is provided with a guide sleeve that is slidably connected to the guide column.

[0027] The beneficial effect of the utility model is that: since the compound oil of the expanded explosive is a block solid before being heated and melted, it is completely solid at the initial stage of being put into the wax melting tank, so it cannot be stirred. At this time, the transmission box is driven upward by the telescopic cylinder to make the stirring blade move upward and leave the wax melting tank. The first electric control valve is controlled to open by the PID controller to allow steam to pass into the first steam coil, so that the temperature in the wax melting tank rises, and the compound oil is gradually heated and melted. When the compound oil melts to a solid-liquid mixed state, the telescopic cylinder is controlled to drive the transmission box to move downward, so that the stirring blade extends into the wax melting tank, and the driving motor is controlled to rotate so that the nut slider moves back and forth left and right along the reciprocating screw rod. During the movement, the stirring shaft is rotated by the meshing of the gear and the rack, so that the stirring blade The sheet stirs the composite oil in the wax melting tank. At this time, the temperature of the composite oil in the wax melting tank gradually increases. The temperature of the composite oil in the wax melting tank is monitored in real time by the first temperature sensor, and the opening of the first electric control valve is correspondingly controlled by the PID controller, so as to adjust the steam inlet amount of the first steam inlet pipe, so that the temperature of the composite oil in the wax melting tank is controlled between 80-90°C, and decomposition is avoided when the temperature reaches above 90°C; due to PID control, and after the wax melting tank is initially melted, the stirring shaft is driven by the telescopic cylinder to extend into the wax melting tank, and the transmission box is used to make the stirring shaft reciprocate in the wax melting tank during the rotating and stirring process, so that the composite oil in the wax melting tank is more evenly distributed, thereby accurately controlling the wax melting temperature and improving the wax melting efficiency and wax melting uniformity of the wax melting tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a wax tank temperature control system for an expanded explosive production workshop according to a specific implementation method of the utility model;

[0029] Description of labels:

[0030] 1. Frame; 11. Guide sleeve;

[0031] 2. wax melting tank body; 21. first steam coil; 22. first steam inlet pipe; 23. first steam return pipe; 24. first electric control valve; 25. first check valve;

[0032] 3. A first temperature sensor;

[0033] 4. Transmission box; 41. Reciprocating screw rod; 42. Driving motor; 43. Screw nut slider; 44. Guide rail; 45. Rack; 46. Guide column;

[0034] 5. stirring shaft; 51. gear; 52. stirring blade;

[0035] 6. Telescopic cylinder;

[0036] 7. Insulation tank; 71. Second steam coil; 72. Second steam inlet pipe; 73. Second steam return pipe; 74. Second electric control valve; 75. Second check valve;

[0037] 8. material guide pipe; 81. third electric control valve;

[0038] 9. A second temperature sensor;

[0039] 10. Water tank; 101. Heating device. DETAILED DESCRIPTION

[0040] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0041] Please refer to Figure 1 The specific implementation of the utility model relates to a wax tank temperature control system for an expanded explosive production workshop, comprising:

[0042] Rack 1;

[0043] A wax melting tank body 2, the wax melting tank body 2 is a tank structure with an upper opening, a first steam coil 21 is coiled in the tank body, one end of the first steam coil 21 extends out of the wax melting tank body 2 and is connected to a first steam inlet pipe 22, and the other end of the first steam coil 21 extends out of the wax melting tank body and is connected to a first steam return pipe 23; the first steam return pipe 23 is connected to a first electric control valve 24;

[0044] A first temperature sensor 3, which is disposed in the wax melting tank body 2 and is used to monitor the oil temperature in the wax melting tank body 2;

[0045] A transmission box 4, wherein the transmission box 4 is connected to the upper part of the wax melting tank body 2 in a liftable manner, wherein a reciprocating screw 41 with a horizontal axial direction is provided in the transmission box 4, wherein one end of the reciprocating screw 41 is transmission-connected to a driving motor 42, wherein the driving motor 42 is used to drive the reciprocating screw 41 to rotate, wherein a nut slider 43 is connected to the reciprocating screw 41, wherein a horizontal guide rail 44 is further provided in the transmission box 4, wherein the nut slider 43 is slidably connected to the guide rail 44, and wherein a horizontal rack 45 is further provided in the transmission box 4;

[0046] A stirring shaft 5, the upper end of which is connected to the nut slider 43 via a bearing, a gear 51 is coaxially connected to the stirring shaft 5, and the gear 51 is meshed with the rack 45;

[0047] A stirring blade 52, wherein the stirring blade 52 is connected to the lower part of the stirring shaft 5;

[0048] A telescopic cylinder 6, wherein the cylinder body of the telescopic cylinder 6 is vertically connected to the frame 1, and the piston rod of the telescopic cylinder 6 is connected to the transmission box 4, and the telescopic cylinder 6 is used to drive the transmission box 4 to move upward and downward;

[0049] A PID controller is electrically connected to the first temperature sensor 3 , the first electric control valve 24 , the drive motor 42 , and the telescopic cylinder 6 , respectively.

[0050] In the above embodiment, since the compound oil of the expanded explosive is a block solid before being heated and melted, it is completely solid at the initial stage of being put into the wax melting tank, so it cannot be stirred. At this time, the transmission box 4 is driven to move upward by the telescopic cylinder 6, so that the stirring blade 52 moves upward and leaves the wax melting tank. The first electric control valve 24 is controlled to open by the PID controller to allow steam to pass into the first steam coil 21, so that the temperature in the wax melting tank rises, and the compound oil is gradually heated and melted. When the compound oil melts to a solid-liquid mixed state, the telescopic cylinder 6 is controlled to drive the transmission box 4 to move downward, so that the stirring blade 52 extends into the wax melting tank, and the drive motor 42 is controlled to rotate, so that the nut slider 43 moves back and forth along the reciprocating screw rod 41. During the movement, the gear 51 is engaged with the rack 45 to rotate the stirring shaft 5, so that The stirring blade 52 stirs the composite oil in the wax melting tank. At this time, the temperature of the composite oil in the wax melting tank gradually increases. The temperature of the composite oil in the wax melting tank is monitored in real time by the first temperature sensor 3, and the opening of the first electric control valve 24 is correspondingly controlled by the PID controller, so as to adjust the steam intake of the first steam inlet pipe 22, so that the temperature of the composite oil in the wax melting tank is controlled between 80-90°C to avoid decomposition caused by the temperature reaching above 90°C. Due to PID control and after the wax melting tank is initially melted, the stirring shaft 5 is driven by the telescopic cylinder 6 to extend into the wax melting tank, and the transmission box 4 is used to make the stirring shaft 5 reciprocate in the wax melting tank during the rotation and stirring process, so that the composite oil in the wax melting tank is more evenly distributed, thereby accurately controlling the wax melting temperature and improving the wax melting efficiency and wax melting uniformity of the wax melting tank.

[0051] As a preferred embodiment, it also includes:

[0052] A heat preservation tank 7, wherein a second steam coil 71 is coiled inside the heat preservation tank 7, one end of the second steam coil 71 extends to the outside of the heat preservation tank 7 and is connected to a second steam inlet pipe 72, the other end of the second steam coil 71 extends to the outside of the heat preservation tank 7 and is connected to a second steam reflux pipe 73, the second steam inlet pipe 72 is connected to a second electric control valve 74, and the heat preservation tank 7 is located below the wax melting tank body 2;

[0053] A material guide pipe 8, the material guide pipe 8 is connected between the lower part of the wax melting tank body 2 and the upper part of the heat preservation tank 7, and the material guide pipe 8 is connected to a third electric control valve 81;

[0054] A second temperature sensor 9, which is disposed in the heat preservation tank 7 and is used to monitor the oil temperature in the heat preservation tank 7;

[0055] The PID controller is electrically connected to the second electrically controlled valve 74 , the third electrically controlled valve 81 , and the second temperature sensor 9 , respectively.

[0056] In the above embodiment, after the compound oil is completely melted in the wax melting tank, it needs to be transferred to the heat preservation tank 7 for heat preservation and storage for standby, so that the next batch of compound oil that needs to be melted can be put into the wax melting tank. By setting the second electric control valve 74 and the third electric control valve 81 and the second temperature sensor 9, and all of them are controlled by the PID controller, the temperature in the heat preservation tank 7 is controlled at 70-80°C, which can avoid the high-temperature decomposition of the expander on the one hand, and avoid the compound oil from solidifying again on the other hand.

[0057] As a preferred embodiment, a first one-way valve 25 is connected to the first steam reflux pipe 23 .

[0058] As a preferred embodiment, a second one-way valve 75 is connected to the second steam reflux pipe 73 .

[0059] As a preferred embodiment, the telescopic cylinder 6 is a pneumatic cylinder, a hydraulic cylinder or an electric cylinder.

[0060] As a preferred embodiment, it also includes:

[0061] The water tank 10, the starting end of the first steam inlet pipe 22 is connected to the water tank 10, the starting end of the second steam inlet pipe 72 is connected to the water tank 10, the end of the first steam return pipe 23 is connected to the water tank 10, and the end of the second steam return pipe 73 is connected to the water tank 10;

[0062] The heating device 101 is connected to the water tank 10 and is used to heat the water in the water tank 10 to generate steam.

[0063] As a preferred embodiment, a vertical guide post 46 is connected to the upper part of the transmission box 4, and a guide sleeve 11 is provided on the frame 1 to be slidably connected to the guide post 46. By providing the structure of the guide post 46 and the guide sleeve 11, the up and down movement of the transmission box 4 is assisted and limited, thereby improving the stability of the movement of the transmission box 4.

[0064] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A wax tank temperature control system for an expanded explosive production workshop, characterized in that: include: frame; The wax melting tank body is a tank structure with an upper opening, a first steam coil is coiled in the tank body, one end of the first steam coil extends out of the wax melting tank body and is connected to a first steam inlet pipe, and the other end of the first steam coil extends out of the wax melting tank body and is connected to a first steam return pipe; the first steam return pipe is connected to a first electric control valve; A first temperature sensor, which is disposed in the wax melting tank body and is used to monitor the oil temperature in the wax melting tank body; A transmission box, the transmission box is liftably connected to the upper part of the wax melting tank body, a reciprocating screw with a horizontal axial direction is arranged in the transmission box, one end of the reciprocating screw is transmission-connected to a driving motor, the driving motor is used to drive the reciprocating screw to rotate, a nut slider is connected to the reciprocating screw, a horizontal guide rail is also arranged in the transmission box, the nut slider is slidably connected to the guide rail, and a horizontal rack is also arranged in the transmission box; A stirring shaft, the upper end of which is connected to the nut slider via a bearing, a gear is coaxially connected to the stirring shaft, and the gear is meshed with the rack; A stirring blade, wherein the stirring blade is connected to the lower part of the stirring shaft; A telescopic cylinder, wherein the cylinder body of the telescopic cylinder is vertically connected to the frame, the piston rod of the telescopic cylinder is connected to the transmission box, and the telescopic cylinder is used to drive the transmission box to move upward and downward; A PID controller is electrically connected to the first temperature sensor, the first electric control valve, the drive motor, and the telescopic cylinder respectively.

2. The wax melting tank temperature control system for expanded explosive production workshop according to claim 1, characterized in that: Also includes: A heat preservation tank, wherein a second steam coil is coiled in the heat preservation tank, one end of the second steam coil extends to the outside of the heat preservation tank and is connected to a second steam inlet pipe, the other end of the second steam coil extends to the outside of the heat preservation tank and is connected to a second steam reflux pipe, the second steam inlet pipe is connected to a second electric control valve, and the heat preservation tank is located below the wax melting tank body; A material guide pipe, the material guide pipe is connected between the lower part of the wax melting tank body and the upper part of the heat preservation tank, and the material guide pipe is connected to a third electric control valve; A second temperature sensor, the second temperature sensor is arranged in the heat preservation tank and is used to monitor the oil temperature in the heat preservation tank; The PID controller is electrically connected to the second electrically controlled valve, the third electrically controlled valve and the second temperature sensor respectively.

3. The wax melting tank temperature control system for expanded explosive production workshop according to claim 1, characterized in that: The first steam reflux pipe is connected with a first one-way valve.

4. The wax melting tank temperature control system for expanded explosive production workshop according to claim 2, characterized in that: The second steam reflux pipe is connected with a second one-way valve.

5. The wax melting tank temperature control system for expanded explosive production workshop according to claim 1, characterized in that: The telescopic cylinder is a pneumatic cylinder, a hydraulic cylinder or an electric cylinder.

6. The wax melting tank temperature control system for expanded explosive production workshop according to claim 2, characterized in that: Also includes: A water tank, wherein the starting end of the first steam inlet pipe is connected to the water tank, the starting end of the second steam inlet pipe is connected to the water tank, the end of the first steam return pipe is connected to the water tank, and the end of the second steam return pipe is connected to the water tank; The heating device is connected to the water tank and is used to heat the water in the water tank to generate steam.

7. The wax melting tank temperature control system for expanded explosive production workshop according to claim 1, characterized in that: A guide column in a vertical direction is connected to the upper part of the transmission box, and a guide sleeve which is slidably connected with the guide column is provided on the frame.

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